Comes with servo mounting hardware and horn mounting hardware for NXT and installation instructions. This kit is designed to mount following Hitec Servos on NXT:

HS-422 (90° or 180° or continuous rotation)

HS-HS-425BB (90° or 180° or continuous rotation)

HSR-1422CR (57 oz.in.) Continuous Rotation Servo

HS-485HB

This kit does not include servos.

Note the required partsEnsure that you have following:

One of the servos mentioned above
Grommets (Shock isolators) and bushings
Screws, and screwdriver
Nylon adjustable horn bracket, as shown here:
(If your servo does not have this horn, check with your local servo supplier to purchase it separately)

Servo dimensions matching these mountsThere are several other servos that will fit these mounts, if you consider using other servos with these mounts, ensure that they meet these dimensions within 0.2 mm tolerance.